package main

import (
	"context"
	"flag"
	"log/slog"
	"os"
	"os/signal"
	"syscall"

	"gl/application/health"
	applicationledger "gl/application/ledger"
	"gl/infrastructure/config"
	"gl/infrastructure/observability"
	"gl/infrastructure/postgres"
	grpcadapter "gl/interface/grpc"
)

func main() {
	observability.Configure("gl", slog.LevelInfo)
	configPath := flag.String("conf", "./gl.cfg.toml", "path to the TOML configuration file")
	flag.Parse()

	cfg, err := config.Load(*configPath)
	if err != nil {
		slog.Error("load configuration", "error", err)
		os.Exit(1)
	}

	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
	defer stop()

	database, err := postgres.Open(ctx, cfg.Database)
	if err != nil {
		slog.Error("open GL database", "error", err)
		os.Exit(1)
	}
	defer database.Close()
	if err := postgres.Migrate(ctx, database); err != nil {
		slog.Error("migrate GL database", "error", err)
		os.Exit(1)
	}

	repository := postgres.NewJournalRepository(database)
	handler := grpcadapter.NewHandler(health.NewService(database), applicationledger.NewService(repository, nil))
	slog.Info("starting GL gRPC service", "host", cfg.GRPC.Host, "port", cfg.GRPC.Port)
	serverConfig := grpcadapter.ServerConfig{
		Host:            cfg.GRPC.Host,
		Port:            cfg.GRPC.Port,
		ShutdownTimeout: cfg.GRPC.ShutdownTimeout,
	}
	if err := grpcadapter.Run(ctx, serverConfig, handler); err != nil {
		slog.Error("GL service stopped", "error", err)
		os.Exit(1)
	}
}